OENORM EN 301144-6 V 1.1.1
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) protocols - Signalling application for the mobility management service on the alpha interface - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (incl. Diskette!!!)